Top cat mix, tailless only (8)

I believe the answer is:

camisole

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'top' is the definition.
(type of top)

'cat mix tailless only' is the wordplay.
'cat' becomes 'ca' (I can't justify this - if you can you should believe this answer much more).
'tailless' means to remove the last letter (the tail of the word is removed).
'only' becomes 'sole' (synonyms).
'mix' with its last letter removed is 'mi'.
'ca'+'mi'+'sole'='CAMISOLE'

Can you help me to learn more?

(Other definitions for camisole that I've seen before include "woman could wear it" , "jacket" , "Female undergarment" , "nightwear" , "Loose undergarment" .)

I've seen this clue in the Sydney Morning Herald.

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